@book{53583, editor = {{Müller, Wolfgang and Wolfe, John}}, title = {{{Proceedings of the 5th International DAC Workshop of UML for SoC Design}}}, year = {{2008}}, } @book{53594, editor = {{Wolfe, John and Müller, Wolfgang}}, title = {{{Proceedings of the 4th DAC Workshop on UML for SOC Design }}}, year = {{2008}}, } @inproceedings{37075, abstract = {{Complex control oriented embedded systems with hard real-time constraints require real-time operation system (RTOS) for predictable timing behavior. To support the evaluation of different scheduling strategies and task priorities, we use an abstract RTOS model based on SystemC. In this article, we present an annotation method for time estimation that supports flexible simulation and validation of real-time-constraints for task migration between different target processors without loss of simulation performance and less memory overhead.}}, author = {{Zabel, Henning and Müller, Wolfgang}}, editor = {{Kleinjohann, L. and Kleinjohann, B.}}, isbn = {{978-0-387-09660-5}}, keywords = {{Execution Time Schedule Strategy Simulation Speed Task Migration Atomic Block}}, publisher = {{Springer Verlag}}, title = {{{An Efficient Time Annotation Technique in Abstract RTOS Simulations for Multiprocessor Task Migration}}}, doi = {{10.1007/978-0-387-09661-2_18}}, volume = {{271}}, year = {{2008}}, } @inproceedings{37072, abstract = {{Bei der Simulation von eingebetteten Echtzeit Systemen zur Analyse von Ausführungs- zeiten und Scheduling gibt es immer einen Kompromiss zwischen zyklengenauen Ergebnis- sen und der Laufzeit der Simulation. Mithilfe von abstrakten RTOS Modellen auf Basis von SystemC wird versucht diese Lücke zu schließen. Aktuelle Arbeiten besitzen allerdings nur unzureichende Möglichkeiten zur Modellierung von Interrupt Scheduling und ihren hard- wareabhängigen Prioritäten. Unser Ansatz verwendet zwei getrennte Scheduler für Softwa- re Task und Interrupt Service Routinen. Diese Trennung erlaubt die präzise Modellierung von Interrupt Prioritäten und Interrupt Scheduling unabhängig von dem eigentlichen RTOS Scheduler.}}, author = {{Zabel, Henning and Müller, Wolfgang}}, booktitle = {{Methoden und Beschreibungs-sprachen zur Modellierung und Verifikation von Schaltungen und System}}, editor = {{Scholl, Ch. and Disch, S.}}, publisher = {{Shaker Verlag}}, title = {{{Präzises Interrupt Scheduling in abstrakten RTOS Modellen in SystemC}}}, year = {{2008}}, } @inproceedings{37076, abstract = {{An komplexe Steuersoftware werden harte Anforderungen bez ̈ug- lich der Einhaltung von Zeitschranken gestellt. Die richtige Wahl eines Echtzeit-Schedulingverfahrens ist hier entscheidend. Die Verwendung von Interrupts in einem Echtzeitsystem erlaubt die zeitnahe Reaktion auf externe Ereignisse. Sie erschwert allerdings die Vorhersagbarkeit von Zeitschranken. In diesem Bericht wird eine Methode zur abstrakten Simulation eines Echtzeitbetriebssystems (Real-Time Operating System/RTOS) in der Systembeschreibungssprache SystemC vorgestellt. Die Verwen- dung eines RTOS-Modelles in SystemC erlaubt die Evaluierung ver- schiedener Schedulingverfahren zu einem fr ̈uhen Zeitpunkt im Ent- wurf des Systems. Interrupts unterliegen allerdings nicht einem RTOS- Schedulingverfahren und m ̈ussen daher gesondert behandelt werden. Dieser Bericht beschreibt die Implementierung eines kanonischen RTOS-Modells zur fr ̈uhen Analyse von Schedulingverfahren, das ei- ne getrennte Modellierung von Task- und Interrupt-Scheduling er- laubt. Dieser Ansatz erlaubt die Trennung des hardwareabh ̈angigen Interrupt-Scheduling in ein separates Modell und eine Evaluierung des Schedules, das sich rein auf Tasks bezieht.}}, author = {{Zabel, Henning and Müller, Wolfgang}}, issn = {{1619-7879}}, number = {{4}}, title = {{{Simulation mit abstrakten RTOS Modellen in SystemC}}}, volume = {{6}}, year = {{2007}}, } @inproceedings{37083, author = {{Krupp, Alexander and Müller, Wolfgang}}, booktitle = {{Proceedings of the 21st European Conference on Modelling and Simulation (ECMS 2007)}}, title = {{{Systematic Testbench Specification for Constrained Randomized Test and Functional Coverage}}}, year = {{2007}}, } @inproceedings{37080, author = {{Großmann, Jürgen and Fey, Ines and Conrad, M. and Wewetzer, Ch. and Müller, Wolfgang}}, booktitle = {{Proceedings of the Automotive Software Workshop '06}}, title = {{{TestML - A Test Exchange Language for Model-based Testing of Embedded Software}}}, year = {{2007}}, } @inproceedings{37079, author = {{Müller, Wolfgang}}, booktitle = {{Proceedings of the UML for SoC Design Workshop at DAC'07}}, title = {{{On the Use and Misuse of UML- Application of Diagrams in Engineering}}}, year = {{2007}}, } @inproceedings{37085, abstract = {{Smart Cards are becoming a ubiquitous means for securing a wide range of interactive applications. However in many cases its use is limited for authentication purposes only. In this paper we extend the use of smart cards for carrying abstract user interface descriptions which can be rendered on dierent and potentially remote clients that in addition can support varying interaction modalities. This adds on the one hand to the security since a backend application cannot be used without the UI description, and on the other hand to the versatility of applications, since all devices with a respective renderer for certain modalities can be utilized.}}, author = {{Schäfer, Robbie and Müller, Wolfgang and Marin-López, Andrés and Díaz-Sánchez, Daniel}}, booktitle = {{Proceedings of the International Conference on Mobile Technology, Applications and Systems (Mobility 2007)}}, title = {{{Using Smart Cards for Secure and Device Independent User Interfaces}}}, year = {{2007}}, } @inproceedings{38106, abstract = {{User adaptive systems in the context of pervasive computing can only unveil their power if based on a generic middleware managing private data and context information in combination with flexible device access and control. However, managing those data poses severe privacy problems both legally and from a trust perspective. Therefore we propose a home automation middleware for secure management of user and context data that gives access to services just for the authorized users and devices. The middleware has been successfully tested at the ambient computing (AC-LAB) at the University of Paderborn.}}, author = {{Marin, Andres and Müller, Wolfgang and Schäfer, Robbie and Almenarez, Florina and Diaz, Daniel and Ziegler, Max}}, booktitle = {{Proc. of the IEEE PerCom Middleware Support for Pervasive Computing (PerWare 2007)}}, isbn = {{0-7695-2788-4}}, location = {{White Plains, New York, USA}}, publisher = {{IEEE}}, title = {{{Middleware for Secure Home Access and Control}}}, year = {{2007}}, } @inproceedings{38100, abstract = {{Smart Cards are becoming a ubiquitous means for securing a wide range of interactive applications. However in many cases its use is limited for authentication purposes only. In this paper we extend the use of smart cards for carrying abstract user interface descriptions which can be rendered on different and potentially remote clients that in addition can support different interaction modalities. This adds on the one hand to the security since a backend application cannot be used without the UI description, and on the other hand to the versatility of applications, since all devices with a respective renderer for certain modalities can be utilized.}}, author = {{Schäfer, Robbie and Müller, Wolfgang and Marin-López, Andrés and Díaz-Sánchez, Daniel}}, booktitle = {{Proceedings of the 9th International Conference on Human Computer Interaction with Mobile Devices and Services (MobileHCI2007)}}, keywords = {{Smart Card, Abstract User Interface, Device Independence}}, title = {{{Device Independent User Interfaces for Smart Cards}}}, year = {{2007}}, } @inproceedings{38104, abstract = {{Location-aware services for private use such as GPS- based navigation systems and GSM-based offerings have become quite a success for outdoor applications, while indoor positioning systems are still mainly employed for professional use only. The main reasons are cost issues and the complexity of setup and maintenance of those systems. In this paper we present CaMPTrack (Camera-based Multiple Person Tracker), a prototype of a webcam-based positioning system and discuss its application and development challenges.}}, author = {{Schäfer, Robbie and Müller, Wolfgang and Deimann, Roman and Kleinjohann, Bernd}}, booktitle = {{Proceedings of the Workshop on Mobile Spatial Interaction at CHI 2007}}, keywords = {{Positioning Systems, Camera Based, Cost Efficiency, Smart Home Applications}}, title = {{{A Low-Cost Positioning System for Location-Aware Applications in Smart Homes}}}, year = {{2007}}, } @inproceedings{38102, author = {{Schäfer, Robbie and Müller, Wolfgang}}, booktitle = {{Proceedings of IWUMUI’2007 at HCI'2007}}, title = {{{Evaluation of a Multimodal System Based on Dialogue Models and Transformations International Workshop on Usability of User Interfaces: From Monomodal to Multimodal}}}, year = {{2007}}, } @inproceedings{38533, abstract = {{UML (Unified Modeling Language™) as an OMG standard has received wide acceptance in software engineering over the last years. As electronic systems design moved towards software engineering, there is emerging interest for UML within the hardware community and different UML diagrams and their variations found their application in requirements specification, testbenches, architectural descriptions, and behavioral modeling.In most cases, UML is just applied as a graphical capture, though UML 2.0 meanwhile comes as a computationally complete language based on a generic metamodeling mechanism. Though it introduces considerable complexity, it is one of the key strengths of UML 2.0, providing a flexible foundation for its customization towards different application domains through so-called UML profiles, which currently receives increasing tool support and gives UML great potential to complement current C++-oriented languages for ESL design. In this context, SysML and the UML for SoC extension are already available as OMG profiles for Systems Engineering and SoC application and several proprietary profiles are under development. In that context, the concepts of the Model Driven Architecture (MDA) are of emerging interest. However, since MDA was mainly introduced for CASE tool support, its full application for hardware design still needs some investigations and certainly comes with some pitfalls.For industrial applications, the availability of appropriate tool support is crucial for deployment of UML in SoC design. UML tools currently come in different variations based on different UML versions and subsets with the support of specific flows, so that the selection of the appropriate tools becomes a key decision for the successful introduction of UML. Recently, several groups have reported positive outcomes regarding the customization of UML and tool support towards SoC design. These efforts result from collaborations between industrial users, researchers, and tool vendors, and constitute steps in the right direction. Regarding model exchange between tools, the UML-related XMI (XML Metadata Interchange) format and its relationship to SPIRIT, the emerging IEEE standard, are of additional particular interest. Partial overlaps can be identified and are currently under investigations by some projects, like SPRINT.}}, author = {{Müller, Wolfgang and Vanderperren, Yves}}, booktitle = {{Proceedings of CODES/ISSS}}, title = {{{UML and Model-Driven Development for SoC Design}}}, year = {{2006}}, } @inproceedings{38537, abstract = {{Ubiquitous systems use context information to select and adapt multimodal user interfaces and appliances for individual users in certain situations. However, in order to enable true reactive environments, context information has to be adequately collected, filtered, and processed and combined with user, device and other profiles. In this article, we present how an XML-based transcoding system can be applied for advanced profile processing and evolution. We demonstrate how to encode domain knowledge into sets of rules, which perform adaptations of user, device and context profiles for smart environments.}}, author = {{Schäfer, Robbie and Müller, Wolfgang and Groppe, Jinghua}}, booktitle = {{Proceedings of the 3rd International Conference on Ubiquitous Intelligence and Computing (UIC-06)}}, keywords = {{Resource Description Framework User Preference Smart Home Prefer Temperature Preference Profile}}, title = {{{Profile Processing and Evolution for Smart Environments}}}, year = {{2006}}, } @inproceedings{38538, abstract = {{Neither UML 2.0 nor the upcoming SysML 1.0 currently provides suffi- cient means for applications in the context of heterogeneous electronic systems de- scription and simulation. In this article, we demonstrate how general concepts of the simulation framework Ptolemy II seamlessly complement SysML to serve as a uni- versal description language covering discrete event as well as continuous behaviors.}}, author = {{Müller, Wolfgang and Zabel, Henning}}, booktitle = {{Proceedings of the UML-SoC Workshop at DAC 2006}}, title = {{{Towards a Unified Behavioural Modelling Language}}}, year = {{2006}}, } @inproceedings{38536, author = {{Müller, Wolfgang}}, booktitle = {{Proc. of FDL'06}}, title = {{{UML - The Emerging Hardware Description Language?}}}, year = {{2006}}, } @inproceedings{38540, author = {{Lavagno, Luciano and Müller, Wolfgang}}, title = {{{UML: A Next Generation Language for SoC Design}}}, year = {{2006}}, } @inproceedings{38543, abstract = {{Today a large variety of mobile interaction devices such as PDAs and mobile phones enforce the development of a wide range of user interfaces for each platform. The complexity even grows, when multiple interaction devices are used to perform the same task and when different modalities have to be supported. We introduce a new dialog model for the abstraction of concrete user interfaces with a separate advanced control layer for the integration of different modalities. In this context, we present the Dialog and Interface Specification Language (DISL), which comes with a proof-of-concept implementation.}}, author = {{Schäfer, Robbie and Bleul, Steffen and Müller, Wolfgang}}, booktitle = {{Proceedings of the 5th International Workshop on Task Models and Diagrams for User Interface Design (TAMODIA'2006)}}, isbn = {{978-3-540-70815-5}}, keywords = {{User Interface Interaction Manager Output Device Multimodal Interface Interaction Object}}, title = {{{Dialog Modelling for Multiple Devices and Multiple Interaction Modalities}}}, doi = {{10.1007/978-3-540-70816-2_4}}, year = {{2006}}, } @inproceedings{38784, abstract = {{This article presents the classification tree method for functional verification to close the gap from the specification of a test plan to SystemVerilog (Chandra and Chakrabarty, 2001) test bench generation. Our method supports the systematic development of test configurations and is based on the classification tree method for embedded systems (CTM/ES) (Chakrabarty et al., 2000) extending CTM/ES for random test generation as well as for functional coverage and property specification}}, author = {{Krupp, Alexander and Müller, Wolfgang}}, booktitle = {{Proceedings of the Design Automation & Test in Europe Conference}}, isbn = {{3-9810801-1-4}}, keywords = {{Classification tree analysis, System testing, Embedded system, Safety, Automatic testing, Automation}}, publisher = {{IEEE}}, title = {{{Classification Trees for Functional Coverage and Random Test Generation}}}, doi = {{10.1109/DATE.2006.243902}}, year = {{2006}}, }